CVE-2026-8955

Description

Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

PUBLISHED Reserved 2026-05-19 | Published 2026-05-19 | Updated 2026-05-20 | Assigner mozilla

Product status

Credits

lebr0nli

References

bugzilla.mozilla.org/show_bug.cgi?id=2031064

www.mozilla.org/security/advisories/mfsa2026-46/

www.mozilla.org/security/advisories/mfsa2026-48/

www.mozilla.org/security/advisories/mfsa2026-50/

www.mozilla.org/security/advisories/mfsa2026-51/

cve.org (CVE-2026-8955)

nvd.nist.gov (CVE-2026-8955)

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